Use jest-diff options to turn off colors in diff #123
Merged
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Make use of the new jest-diff options which allow color output to be
controlled. Use of example in documentation to turn off all color
output. strip-ansi is now unnecessary and has been removed as a
dependency.
Fixes #113
Documentation example: https://github.com/facebook/jest/tree/d81464622dc8857ba995ed04e121af2b3e8e33bc/packages/jest-diff#example-of-options-for-no-colors